Question

Bài 2: Tìm x 

a, 936 - ( X + 24 ) = 72

b, 1635 - ( X - 39 = 482

c, 2750 - ( 85 - X ) = 2670

Answer 1

Bài làm :

a) 936 - ( x + 24 ) = 72

x + 24 = 936 - 72

x + 24 = 864 

x = 840 

b) 1635 - ( x - 39 ) = 482 

x - 39 = 1635 - 482 

x - 39 = 1153

x = 1192

c) 2750 - ( 85 - x ) = 2670 

85 - x = 2750 - 2670

85 - x = 80

x = 5 

Học tốt nhé

Answer 2

936-(x+24)=72 => (x+24)=936-72 =>(x+24)=864 =>x=864-24 =>x=840

vậy x=840

1635-(x-39)=482 =>(x-39)=1635-482=>(x-39)=1153=>x=1153+39=>x=1192

vậy x=1192

2750-(85-x)=2670=>(85-x)=2750-2670=>(85-x)=80=>x=85-80=>x=5

vậy x=5

Answer 3

a, 936 - ( x + 24 ) = 72

<=> x + 24 = 936 - 72

<=> x + 24 = 864

<=> x = 840

Vậy x = 840

b, 1635 - ( x - 39) = 482

<=> x - 39 = 1635 - 482

<=> x - 39 = 1153

<=> x = 1192

Vậy_

c,tuong tu

Answer 4

            Bài làm :

a) 936 - ( x + 24 ) = 72

⇔x + 24 = 936 - 72

⇔x + 24 = 864 

⇔x = 840 

b) 1635 - ( x - 39 ) = 482 

⇔x - 39 = 1635 - 482 

⇔x - 39 = 1153

⇔x = 1192

c) 2750 - ( 85 - x ) = 2670 

⇔85 - x = 2750 - 2670

⇔85 - x = 80

⇔x = 5